Mike is available for hire

Mike Sabatini

Verified Expert in Engineering

Software Developer

Pittsburgh, PA, United States

Toptal member since March 7, 2018

Expertise

Web Development Full-stack REST API JavaScript Xcode iOS Objective-C CSS Express.js Node.js Lodash Linux Python Microservices Development

Bio

Mike has spent more than a decade developing in a wide range of industries from consumer products, industrial applications, eCommerce, and many more. He's cultivated a large skill set that encompasses all aspects of modern applications and platforms. Mike is comfortable with a wide range of technologies, both the front and back end. He's also well versed in design concepts—ensuring that his products work for both the product owner and the user.

Portfolio

Kuali, Inc.

SQL, MongoDB, React, JavaScript, HTML, Node.js, Architecture, CI/CD Pipelines...

Mezo

Node.js, React, Google Cloud, Firebase, NestJS, Architecture, CI/CD Pipelines...

Kenect

Java, iOS, React Native, Google Cloud, SQL, PostgreSQL, Architecture...

Experience

JavaScript - 10 years
MySQL - 10 years
iOS - 9 years
Objective-C - 8 years
CSS - 8 years
Node.js - 6 years
Swift - 5 years
React - 1 year

Availability

Part-time

Preferred Environment

Vim Text Editor, GitHub

The most amazing...

...thing I've built was the consumer end of a major home automatic platform.

Work Experience

Engineering Manager

2017 - PRESENT

Kuali, Inc.

Modernized a legacy application into separate manageable microservices.
Developed a rule service for evaluating arbitrary data payloads in real time.
Helped to maintain a data-driven front-end library for user-configured forms and form-based data.
Built a data-driven schema management tool.

Technologies: SQL, MongoDB, React, JavaScript, HTML, Node.js, Architecture, CI/CD Pipelines, Deployment, Authentication, Front-end Development, Microservices, UI Libraries, DevOps, UI Development, Web App Development, REST APIs, APIs, Full-stack

Director of Engineering

2022 - 2023

Mezo

Reduced test and deploy time by 4x through improved software pipeline architecture, testing strategies, and team processes.
Assisted in the design and migration of synchronous processes to an event-based pattern utilizing Google Pub/Sub, which resulted in performance improvements of up to 50%.
Introduced an updated testing philosophy and improved testing coverage and effectiveness using a combination of automated tests and practical manual testing.

Technologies: Node.js, React, Google Cloud, Firebase, NestJS, Architecture, CI/CD Pipelines, Deployment, Authentication, Front-end Development, UI Libraries, DevOps, UI Development, Web App Development, REST APIs, APIs, Full-stack

Director of Engineering

2021 - 2022

Kenect

Managed four engineering teams, including DevOps. Championed high-quality processes such as robust PR reviews, improved testing, coding standards, and better automation, which enabled developers to do their best work.
Collaborated with product and UX functions to create technical designs for new platform functionality across multiple teams, ensuring the proper requirements and communication were in place to ensure successful software delivery.
Grew the engineering organization 2x by designing and executing a new hiring process.

Technologies: Java, iOS, React Native, Google Cloud, SQL, PostgreSQL, Architecture, CI/CD Pipelines, Deployment, Authentication, Front-end Development, Microservices, UI Libraries, DevOps, Mobile App Development, UI Development, Web App Development, REST APIs, APIs, Full-stack

Lead Mobile Developer

2021 - 2022

Kenect

Optimized the performance of a React Native mobile application by over 400% through a combination of improved database lookups, serialization searches, and indexes on the server paired with a progressive loading and caching strategy on the front end.
Refactored existing application logic with modern React patterns, including contexts, hooks, suspense, etc., enabling more robust testing and lower ongoing maintenance costs.
Expanded testing coverage and tooling, enabling reducing manual steps in the deployment process for faster and more frequent releases to app stores.

Technologies: React Native, SQLite, iOS, Android, Objective-C, Swift, Java, Architecture, CI/CD Pipelines, Deployment, Authentication, Front-end Development, Microservices, UI Libraries, Mobile App Development, UI Development, Web App Development, REST APIs, APIs, Full-stack

Freelance Full-stack JavaScript Developer

2018 - 2019

Care.Club (via Toptal)

Built a custom Node.js server to extend CMS capabilities.
Created integrations for the BigCommerce shopping platform.
Developed stencil template extensions to enhance the user's shopping experience.

Technologies: Content Management Systems (CMS), Node.js, Front-end Development, UI Libraries, UI Development, Web App Development, REST APIs, APIs

iOS Developer

2018 - 2018

Branding Brand

Worked on retail shopping eCommerce iOS applications as a remote member of large development team.
Participated in agile development processes, authored and reviewed code.
Expanded a client application to provide a new experience for customers according to detailed design specs.
Interacted with REST APIs and CMS content to render a data-driven experience on iOS.
Participated in multiple design reviews to ensure that the application matched the visual spec exactly.
Assisted other developers working on parallel aspects of the application as needed basis.

Technologies: iOS SDK, Swift, Objective-C, CI/CD Pipelines, Front-end Development, UI Libraries, Mobile App Development, UI Development, REST APIs, APIs

Lead Technologist

2013 - 2017

Bessemer Alliance

Designed and built a platform that collected and aggregated interview data for analysis.
Developed a sync engine between the web and iOS to provide a robust method for detecting updates during offline access to ensure data uniformity.
Integrated audio data with multiple transcription services for processing through engines to identify trends in the data.
Constructed the web front-end for the management of a multi-user system to deploy interviewing scripts to a remote team.
Built an iOS application for recording user input and voice in accordance with a script—creating an interview format that can be replayed at any time for review.

Technologies: Redis, MongoDB, Sass, CSS, HTML, Swift, Objective-C, iOS, Node.js, JavaScript, Architecture, CI/CD Pipelines, Deployment, Authentication, Front-end Development, Microservices, UI Libraries, Mobile App Development, UI Development, Web App Development, REST APIs, APIs, Full-stack

Senior Product Developer

2013 - 2013

Shoefitr

Improved the user experience of the web-based shopping application.
Initiated the development of a mobile-friendly version of the customer-facing sizing application.
Conducted user interviews to identify additional product market segments.

Technologies: HTML, CSS, C#, JavaScript, Front-end Development, UI Libraries, UI Development, Web App Development, REST APIs, APIs, Full-stack

Engineering Manager

2012 - 2013

MAYA Design

Managed the mentorship of new and young engineers in the program.
Allocated the engineering groups' time and resources for all the company's technical projects.
Helped to set and execute the direction of the engineering group for the company.

Technologies: UI Libraries, UI Development, Web App Development, REST APIs, APIs, Full-stack

Software Designer

2007 - 2013

MAYA Design

Developed software prototypes for user testing and technical proof of concepts in various platforms such as iOS, Android, and HTML/JavaScript.
Built a web service as a companion for iOS, Android and mobile web applications that were to be integrated with a popular home automation platform.
Supported the research and development of a fully distributed data repository.
Developed next-generation user interface applications for major consumer appliance manufacturers.
Contributed and facilitated the user research for a broad spectrum of clients and industries to evaluate existing and potential products market viability.

Technologies: PHP, Objective-C, iOS, CSS, HTML, JavaScript, Python, Front-end Development, UI Libraries, Mobile App Development, UI Development, Web App Development, REST APIs, APIs, Full-stack

Experience

LiftMaster MyQ Service

https://www.liftmaster.com/for-homes/myq-connected-home

I developed the first version of the web and mobile applications to integrate with an automated home automation service by the Chamberlain Group. The mobile interfaces included native mobile applications for Android and iOS in addition to a desktop and mobile web platform. iOS technologies that were used for this project included CoreData, CoreLocation, and UIKit among others.

iOS application: https://itunes.apple.com/us/app/myq-garage-access-control/id456282559?mt=8

Nectr

I developed an iOS application for retail shops to engage with their customers in real time as they navigated through the businesses' physical spaces with rewards and incentives. Technologies used included Bluetooth low energy with beacon technology, CoreLocation, CoreData, UIKit, AVFoundation, and others.

Unfortunately, the application is no longer available on the iTunes store.

Voyant Insights

A team research platform to conduct in-depth interviews of customers and participants using interactive scripts which allowed the interviewer and interviewee to collaborate together as they progressed through the interview. Interviews were recorded in real time and then uploaded to a web server where they were transcribed and the answers analyzed to identify trends among a group of interviewees.

The interview platform was built as an iOS application utilizing technologies such as CoreData, CoreLocation, AddressBook, AVFoundation, UIKit, CoreImage, and AFNetworking.

iOS: https://itunes.apple.com/us/app/voyant-insights/id1072396519?mt=8

Education

2003 - 2007

Bachelor's Degree in Computer Science

University of Pittsburgh - Pittsburgh, PA, USA

Skills

Libraries/APIs

Lodash, Node.js, REST APIs, D3.js, React, Core Audio, jQuery, Handlebars, Underscore.js, Google Maps, Core Graphics, Core Image

Tools

Xcode, NPM, GitHub, Git, Mocha, Atom, Mongoose, Vim Text Editor, Sketch, InVision

Languages

Objective-C, JavaScript, CSS, PHP, HTML5, Swift, Sass, Python, Go, HTML, C#, SQL, GraphQL, PHP 5, Java

Frameworks

Express.js, iOS SDK, Cocoa, UIKit, React Native, Core Data, Core Location, MapKit, Core Bluetooth, NestJS

Platforms

OS X, iOS, Amazon Web Services (AWS), Linux, Bluetooth Low Energy (LE), Android, Firebase

Paradigms

Agile, Testing, Interface Design, Microservices, DevOps

Storage

MongoDB, Redis, MySQL, PostgreSQL, SQLite, Google Cloud

Other

User Interface (UI), Architecture, CI/CD Pipelines, Deployment, Front-end Development, UI Libraries, Mobile App Development, UI Development, Web App Development, APIs, Full-stack, Authentication, Content Management Systems (CMS), Mobile Apps, Bluetooth Beacons

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